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ENB Region 5 Completed Applications 05/04/2016

Clinton County


New York Power Authority
123 Main St
White Plains, NY 10601


NYPA Submarine Cable Cumberland Head
Cumberland Head Substation - along Bottom of Lake Champlain to Grand Isle VT Cumberland Head Rd
Plattsburgh, NY 12901

Application ID:


Permit(s) Applied for:

Article 15 Title 5 Excavation & Fill in Navigable Waters
Section 401 - Clean Water Act Water Quality Certification

Project is Located:

Plattsburgh, Clinton County

Project Description:

The applicant proposes to remove 7 existing transmission cables, and install 4 new 1.8 mile oil-free electric transmission cables between NYPA's Proposed Cumberland Head Transition Station in Plattsburgh and VELCO's Grand Isle Terminal Station in Grand Isle, VT; decommission the existing station at Cumberland Head, construct a new terminal transition station; and relocate a small section of the overhead transmission line. The cables will be installed approx 30' north of the northernmost existing cable, using a combination method of open trenching in the upland sections, horizontal directional drilling in the near shore areas to water depths of 30', jet sledding at water depths of 30-100', and direct lay in water depths greater than 100'. Temporary gravity cells (11' x 25') will be installed at exist points in the lake to confine drilling fluids and minimize turbidity. Rip rap material covering the existing cables in the shallow areas will be temporarily side cast for removal of the cables. Project construction will potentially require the installation of 20 concrete mattresses, 8'W x 40'L x 9" thick, for cable protection. On the NY side, total temporary impacts are 14,100 SF, with potential permanent impacts from concrete mats of 6,400 SF.

Availability of Application Documents:

Filed application documents, and Department draft permits where applicable, are available for inspection during normal business hours at the address of the contact person. To ensure timely service at the time of inspection, it is recommended that an appointment be made with the contact person.

State Environmental Quality Review (SEQR) Determination:

Project is a Type I action and will not have a significant effect on the environment. A coordinated review with other agencies was performed and a Negative Declaration is on file.

SEQR Lead Agency: New York Power Authority

State Historic Preservation Act (SHPA) Determination:

A cultural resources survey has been completed and cultural resources were identified. Based on information provided in the survey report, the New York State Office of Parks, Recreation and Historic Preservation (OPRHP) has determined that the proposed activity will have no adverse impact on registered or eligible archaeological sites or historic structures. No further review in accordance with SHPA is required.

Coastal Management:

This project is not located in a Coastal Management area and is not subject to the Waterfront Revitalization and Coastal Resources Act.

Opportunity for Public Comment:

Comments on this project must be submitted in writing to the Contact Person no later than May 19, 2016.


Erin L Burns
NYSDEC Region 5 Headquarters
1115 St Rte 86
Ray Brook, NY 12977

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